Recent answers to Black sections in bookmarks list when moving cursor over list.https://support.mozilla.org/en-US/questions/9480112013-01-23T01:50:16-08:00Super advice as it cleared the problem. Hardware accelerator was the cause of the problem. Thank 2013-01-23T01:50:16-08:00aeongushttps://support.mozilla.org/en-US/questions/948011#answer-400841

Super advice as it cleared the problem. Hardware accelerator was the cause of the problem. Thank you.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools &gt; Add-ons &gt; Extens2013-01-22T16:12:17-08:00cor-elhttps://support.mozilla.org/en-US/questions/948011#answer-400720

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools &amp;gt; Add-ons &amp;gt; Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools &amp;gt; Add-ons &amp;gt; Appearance).

Do NOT click the Reset button on the Safe mode start window or otherwise make changes.